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Finding the Fourth Proportional to 71,567.55, 107,368.18 and 21,648.06

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Solution

The fourth proportional to 71,567.55, 107,368.18 and 21,648.06 is: 32,477.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,567.55 : 107,368.18 = 21,648.06 : x
  2. Step 2: Convert to fraction form
    71,567.55/107,368.18 = 21,648.06/x
  3. Step 3: Cross multiply
    71,567.55x = 107,368.18 × 21,648.06
  4. Step 4: Simplify right side
    71,567.55x = 2,324,312,870.38
  5. Step 5: Solve for x
    x = 2,324,312,870.38/71,567.55
  6. Step 6: Final answer
    x = 32,477.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.